SHAPED-CHARGE ATTACHING METHOD FOR EXPLOSIVE DEMOLITION OF STEEL STRUCTURE

摘要

PURPOSE: A shaped-charge attaching method for the explosive demolition of a steel structure is provided to demolish structures easily even a thick steel structure, and facilitate the installation of shaped charge. CONSTITUTION: A method to attach comprises three steps. In the first step, a web(18) of a shaped-steel(14) or two sides facing with each other are cut off. In the second step, holes(22) are punched in both sides of a cut-off part(20). In the third step, more than two pairs of shaped charge(2) are attached on the hole to be projected from the outside of a flange part(16). Then, the blasting dismantlement is processed. The shaped charge consists of a tube and a charge of gunpowder. The tube is made of plastic or copper.